Chopping and extracting apparatus.



I No. 874,270.

PAT'ENTED DEG.17, 1907; O. WEHRLE.

GHOPPING AND EXTRAGTING APPARATUS.

APPLICATION FILED NOV. 2' I906.

llilii 93 C Wit" eooeo TN: "on!!! wanna go., \usnmarau, n. c.

OTTO WEHRLE, OF EMMENDINGEN, GERMANY.

CHOPPING AND EXTRACTING APPARATUS.

Specification of Letters Patent.

Patented Dec. 17, 1907.

Application filed November 2, 1906- Serial No. 341,667.

To all whom it may concern:

Be it known that OTTO WEHRLE, a subject of the Emperor of Germany,residing at 36 Hochburgerstrasse, Emmendingen, Baden, in the Empire ofGermany, manufacturer, has invented certain new and useful Improvementsin Chopping and Extracting Apparatus, of which the following is aspecification.

This invention relates to certain new and useful improvements in devicesfor hastening lixiviation in brewing apparatus, and it has for itsobject among others to provide an improved mechanism for this purpose bywhich the extraction material is pressed and forced against the wall ofthe vat and the blades for this purpose constructed to also serve to cutthe material.

Other objects and advantages of the invention will hereinafter appearand the novel features thereof will be particularly pointed out in theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification, and in which Figure 1 is an elevation showing my improvedconstruction. Fig. 2 is a detail in plan with portions broken away, andparts in section. Fig. 3 is an enlarged detail, partly in elevation andpartly in section. Fig. 4 is a view with the blades shown at an angle tothe position in which they are seen in Fig. 3. Fig. 5 is a bottom planof one blade and two knives seen at the left of Fig. 3. Fig. 6 is asimilar view of the blade'and knives seen at the right of Fig. 3.

Like numerals of reference indicate like parts in the different views.

It is desirable that provision should be made for insuring that theknives or blades be constructed to both out and extract. At thebeginning of the operation the broad blades may be set with their broadsurfaces tangential to the line of motion and subsequently set at rightangles thereto when it is desired to change the nature of theiroperation. These blades thus serve in one instance as knives forcutting, and in the other instance as' pressers for forcing and pressingthe extraction material against the walls of the vat.

a 0. represent two arms carried by a revoluble support a revolublewithin the tubular support a within the cylinder or vat (L The rotationof the support a and arms a a may be produced by any simple well-knownmechanism. Pendent from these arms are the carriers 1) which support theknives c. The knives are ordinary blade knives and are designed to cutthrough the mass within the cylinder. As they are not designed tocooperate in the extraction they are made comparatively thin. Betweeneach pair of these blades or knives, which latter have a fixed position,is a broad rotatable vane or blade (1 vertically mounted for rotationwithin the carrier b. These vanes are rectilinear vertically and aresomewhat curved horizontally. By reason of these vanes being curvedapproximately in the radius in which they travel, they constitute actualknives in this path, while such curvature renders them stiff and not soreadily bent, so that when they are suitably turned, they serve asextractor vanes, they all assuming an oblique position for the purposeof pressing and forcing the extraction material against the wall of thevat. In order that all of these vanes may be turned simultaneously theirstems d extend above the arms a a, as seen, and are provided with thecrank arms (1 connected by a suitable rod or bar (Z What I claim as newis 1. In a device of the character described, a rotatable support, thinknives for cutting, and between said knives, rotatable thin bladesadapted to serve for both cutting and extracting, said knives and bladesbeing carried by said support.

2. In a device of the character described, a rotatable support, thinknives for cutting, and between said knives, rotatable thin curvedblades adapted to serve for both cutting and extracting, said knives andblades beidg carried by said support.

3. In a device of the character described, rotatable arms, knives forcutting fixed relatively to said arms, and rotatable blades be tweensaid knives and adapted to serve for both cutting and extracting.

4. In a device of the character described, rotatable arms, knives forcutting fixed relatively to said arms, and rotatable curved, thin bladesbetween said knives and adapted to serve for both cutting andextracting.

In testimony whereof I affix my signature in presence of two witnesses.

OTTO WEI-IRLE.

Witnesses:

FEED. O. MEILLER, AGNES SOHULTZE.

